Mantequillas rellenas (Esta vez sale bien)

The video likely performed well due to the satisfying ASMR-like sensory experience of playing with slime, combined with the creator's engaging presentation and the visually appealing colors of the slime.

The creator shows three different types of "mantequillas rellenas" which appear to be slime-based. She demonstrates the texture and sound of each by squishing and stretching them, expressing her enjoyment of the sound and texture.